High-level overview of match token classes.

Your match rule will contain one or more high-level Comparison Operators (Exact, ExactOrNull, ExactOrAllNull, notExactSame, and Fuzzy) and that the actual comparison work is performed by the comparator classes you select for the rule. Now consider that your tenant may have millions of profiles in it and it is clearly impractical to compare every profile against every other profile while looking for duplicates. Instead, it is the job of the match token classes to quickly and efficiently identify the correct pairs of match candidates to present to a match rule for comparison.